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    Freelancer Taxes: Your Guide to Estimated Quarterly Taxes

    Don't get caught off guard! Learn how to manage estimated quarterly taxes for freelancers with Centennial Accounting Group's expert guide. Get started today!

    Centennial Accounting GroupMay 9, 2026

    Freelancer Taxes: Your Guide to Estimated Quarterly Taxes

    Navigating the world of freelance taxes can feel complex, especially when it comes to understanding your obligations for estimated quarterly tax payments. This guide is designed to demystify the process, helping you stay compliant and avoid penalties. Our team at Centennial Accounting Group is here to support you every step of the way.

    Person working at a desk with a laptop and papers

    What are Estimated Quarterly Taxes?

    Estimated quarterly taxes are payments you make throughout the year to pay income tax and self-employment tax (Social Security and Medicare). As a freelancer, you generally don't have an employer withholding these taxes from your paychecks. Therefore, you are responsible for calculating and paying them yourself. Failing to pay enough tax by the due dates can result in penalties and interest.

    Your estimated tax payments cover your tax liability for income earned from your freelance work, including any business profits. This includes federal taxes owed to the IRS and potentially state income taxes to the Colorado Department of Revenue (CDOR), as well as local taxes for those in home-rule cities. The goal is to pay tax as you earn income, preventing a large tax bill at the end of the year and avoiding underpayment penalties.

    Who Needs to Pay Estimated Quarterly Taxes?

    You likely need to pay estimated quarterly taxes if you expect to owe at least ,000 in tax for the year. This applies to most freelancers, independent contractors, and small business owners who receive income not subject to withholding. This includes income from self-employment, interest, dividends, rent, and alimony.

    Consider a scenario for Sarah, a freelance graphic designer in Denver. She anticipates earning $60,000 from her freelance work this year. Since this income is not subject to withholding, she will need to make estimated quarterly tax payments to cover her federal and Colorado state income taxes, as well as her self-employment taxes. Without these payments, she could face penalties when she files her annual tax return.

    Calculator and coins on a financial document

    Calculating Your Estimated Tax Payments

    Calculating estimated taxes involves projecting your annual income and deductions. You'll need to estimate your gross income, then deduct business expenses. This will give you your taxable income. From there, you can calculate your expected income tax and self-employment tax.

    Form 1040-ES, Estimated Tax for Individuals, provides worksheets and instructions to help you calculate these amounts. It's crucial to be as accurate as possible. If your income fluctuates significantly, you may need to adjust your payments throughout the year. Additionally, remember to account for any credits you might be eligible for, such as those for business expenses or healthcare.

    Mini Scenario: The Consulting Firm Owner

    Let’s look at Mark, who runs a small IT consulting firm in Boulder. He expects his firm to generate 00,000 in profit this year. Mark needs to calculate his estimated taxes, factoring in potential business write-offs like software subscriptions, home office expenses, and professional development courses. He’ll use the IRS worksheets for Form 1040-ES to determine his federal estimated tax liability. Given Boulder's home rule status, he also needs to confirm if there are any local income tax obligations and factor those into his quarterly payments. For reliable advice on business deductions and tax calculations, Mark trusts his CPA at Centennial Accounting Group.

    When are Estimated Taxes Due?

    Estimated tax payments are generally due on four dates throughout the year. These dates are spread out, typically falling around:

    • April 15
    • June 15
    • September 15
    • January 15 of the following year
    If a due date falls on a weekend or holiday, the deadline is extended to the next business day. It is vital to adhere to these deadlines to avoid penalties. For example, if you are a freelancer in Colorado and receive a significant payment in early April, your first estimated tax payment should be made by the April 15th deadline to cover income earned during that period.

    Calendar with marked dates

    Common Mistakes to Avoid

    One of the most common mistakes is underestimating your income or overestimating your deductions. This leads to paying too little tax throughout the year, resulting in penalties. Another mistake is forgetting to account for self-employment taxes, which are in addition to federal and state income taxes. Additionally, missing the payment deadlines entirely can trigger penalties and interest charges from the IRS and CDOR. Many freelancers also overlook potential state and local tax obligations beyond federal taxes.

    Another pitfall is failing to adjust payments when your income changes. For instance, if you land a big project mid-year that significantly increases your expected annual income, you should recalculate and potentially increase your remaining quarterly payments. It's also important to keep accurate records of your income and expenses; poor bookkeeping can lead to calculation errors. If you're unsure about the requirements, seeking professional help is always a wise decision.

    Bottom Line

    Paying estimated quarterly taxes is a critical responsibility for freelancers to remain compliant and avoid penalties. By understanding who needs to pay, how to calculate your payments, and when they are due, you can confidently manage your tax obligations. Our team at Centennial Accounting Group specializes in providing tailored accounting and tax services for the Professional Services industry. Whether you need assistance with tax preparation, professional bookkeeping, payroll services, or strategic fractional CFO services, we are here to help. Don't let tax season stress you out – schedule a free consultation with us today to discuss your unique needs and ensure your business is on solid financial footing. We can also advise on matters like business formation and audit defense.

    Disclaimer: This information is intended for general guidance and informational purposes only and does not constitute tax advice. Tax laws are complex and subject to change. It is essential to consult with a qualified tax professional for advice specific to your individual situation. Centennial Accounting Group advises consulting with a tax professional before making any decisions or taking any action that may affect your taxes or finances.

    Sources & References

    This article references information from the following authoritative sources:

    Disclaimer: This article is provided for informational and educational purposes only and does not constitute legal, tax, or financial advice. Tax laws and regulations change frequently, and the information presented may not reflect the most current legal developments. Every individual's tax situation is unique, and the strategies discussed may not be suitable for your specific circumstances.

    Before making any tax-related decisions, we strongly recommend consulting with a qualified tax professional or accountant. CAG Accountant is not responsible for any actions taken based on the information in this article. All referenced trademarks and copyrights belong to their respective owners.

    © 2026 Centennial Accounting Group. All rights reserved.

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